Possibilities of production of active carbon from biological sludge
                                            vastutusandmed
                                    
                                    
L.Pikkov, J.Kallas, E.Rikmann
                                                    
                                            
                                            ilmumiskoht
                                    
                                    
Tallinn
                                                    
                                            
                                            ilmumisaasta
                                    
                                    
                                
                                            leheküljed
                                    
                                    
p. 117
                                                    
                                            
                                            märkused
                                    
                                    
Bibl. 2 ref
                                                    
                                            
                                            keel
                                    
                                    
inglise
                                                    
                                            
                            Pikkov, L., Kallas, J., Rikmann, E. Possibilities of production of active carbon from biological sludge // 23rd Estonian Chemistry Days : abstracts of scientific conference. Tallinn, 1997. p. 117.